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  1. #14
    Join Date
    Feb 2004
    Location
    SC
    Posts
    20,677
    Quote Originally Posted by beachtech View Post
    hot water heater...

    why would you need to heat hot water
    See post #12, this thread.
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  2. #15
    Join Date
    Nov 2007
    Location
    I am unsure myself
    Posts
    1,116
    Quote Originally Posted by ndfrozen View Post
    Realize that an instant water heater raises the water temp about 40 degrees, if your incoming water temp is in the 40-50 degree range ( a 80-90 dregree shower is not what most folks want) you will need a small 20 gal. electric to pre heat it up. Especially if you are north of the Mason-Dixon line. Ranni has a good info on this issue. And they seem to want to make sure the installer gets it right. Hope this helps.
    Really wow buy a quietside then I come in at 50 and leave at 120 all day long. Sounds like a crappy product to me I will have to check if mine has an built in preheater but its all one unit. Simple stupid hook up water and gas and you are good to go I had it as hot as 160 during testing just to see.

  3. #16
    Join Date
    Feb 2009
    Location
    , had my own business for 30 years
    Posts
    351
    If you are getting by with a 15 gallon tank, this may not apply to you, but with an 'on demand' system don't try and shower, or the fill tub, and do laundry, or any use that requires a large flow.

  4. #17
    Join Date
    Nov 2008
    Posts
    1,673
    Quote Originally Posted by emtim View Post
    15 gallon electric
    15 gals = 125# of water, raising it 80°F takes 10,000 BTU, and doing it in one hour takes 2900w.
    Doing it in 6 minutes takes 29 kw.

    http://www.onlineconversion.com/

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